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The Study of Interference Cancellation Schemes in Multi-Cell MISO Communication Systems

GUO Rong-xin,YUAN Ji-chang(School of Information Science and Engineering,Huaqiao University,Xiamen Fujian 361021,China)  
The inter-cell interference cancellation schemes were investigated with partial channel state information.The sum-rate performance of three kinds of beamforming transmission strategy(i.e.,eigen-beamforming,zero-forcing beamforming and signal to leakage and noise ratio beamforming) by exploiting two independent random vector quantization codebooks to quantize the desired channel and the interference channel respectively is analyzed.The optimal transmission strategy choice of the base station according to user locations and average cell-edge signal to noise ratio is studied.Simulation results demonstrate that when the user is noise-limited,the neighbor base station will choose eigen-beamforming transmission strategy,and when the user is interference-limited,the neighbor base station will choose signal to leakage and noise ratio beamforming transmission strategy.
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